dc.contributor.author | Scheermeyer, Elly | |
dc.contributor.author | Agranovski, Igor E | |
dc.date.accessioned | 2017-05-03T13:48:20Z | |
dc.date.available | 2017-05-03T13:48:20Z | |
dc.date.issued | 2009 | |
dc.date.modified | 2010-06-24T05:22:20Z | |
dc.identifier.issn | 0021-8502 | |
dc.identifier.doi | 10.1016/j.jaerosci.2009.06.003 | |
dc.identifier.uri | http://hdl.handle.net/10072/30657 | |
dc.description.abstract | Fungi havesignificanthealtheffectsvaryingfromseriousallergicreactionsfrominhalationto toxic effectsandevenfatalinfections.Indoorandoutdoorsamplingmayidentifypotentially contaminated environments,butsamplingtechniquesneedrefiningtosetrisklevelsregarding occupational exposureortoassessandanalysesuddenoutbreaksoffungi.Aslittleisknown of thesporulationanddispersaldynamicsoffungi,wehaveexperimentedwithaerosolizing fungal sporesfromculturesgrowninstandard9cmPetridishesfor3-10husinganewdevice that incorporatesvibration.Weevaluatedtheeffectoftheairflowandfrequencyonaquan- tity andpatternofsporesaerosolized.Frequencyhadpositive,negativeornoeffect.Positive quantitative effectswerenotedin Aspergillus versicolor at 50Hz,in Aspergillus niger at 400Hz and at100-400Hzin Rhizopus. Aerosolizationof Aspergillus species droppedsignificantlyin the first20minandthenstabilisedfor2.5-3h.Afterthistimeperiod,thegenerationprocess became highlyunstablewithlargequantitiesofsmallparticlesproduced.Itcouldbeexplained by appearanceofcracksonthenutrientsurfaceduetodesiccationwithcorrespondingrelease of particlesofnutrienttotheaircarrier.For Rhizopus, theinitialsteepdecreaseinparticle generation forthefirst20minoftheprocesswasfollowedbyquitestablesporeproductionfor the following10hofprocessoperation.Therewerenocracksobservedonthenutrientsurface for theentire10hoperationofthedevice.Theairflowalsoaffectstheefficiencyofthespore release. Itwasfoundthatincreaseintheairflowwasassociatedwithmoreefficientsporulation from thenutrientdish.Ontheotherhand,thesizedistributioncurveoftheairbornespores produced athigherairflowswascorrespondinglyslightlyshiftedtowardslargersizes,which is relatedtolessefficientlooseningofsporesandcorrespondingincreaseinconcentrationof clumps consistingofmorethanonespore.Also,itwasfoundthatincubationoffungalcultures for extendedperiods(2-6weeks)ledtowardsproductionoflargernumbersofairbornefungal spores. | |
dc.description.peerreviewed | Yes | |
dc.description.publicationstatus | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Elsevier | |
dc.publisher.place | United Kingdom | |
dc.relation.ispartofstudentpublication | N | |
dc.relation.ispartofpagefrom | 879 | |
dc.relation.ispartofpageto | 889 | |
dc.relation.ispartofissue | 10 | |
dc.relation.ispartofjournal | Journal of Aerosol Science | |
dc.relation.ispartofvolume | 40 | |
dc.rights.retention | Y | |
dc.subject.fieldofresearch | Physical chemistry | |
dc.subject.fieldofresearch | Atmospheric sciences | |
dc.subject.fieldofresearch | Chemical engineering | |
dc.subject.fieldofresearch | Chemical engineering not elsewhere classified | |
dc.subject.fieldofresearchcode | 3406 | |
dc.subject.fieldofresearchcode | 3701 | |
dc.subject.fieldofresearchcode | 4004 | |
dc.subject.fieldofresearchcode | 400499 | |
dc.title | Design and evaluation of a new device for fungal spore aerosolization for laboratory applications | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.faculty | Griffith Sciences, Griffith School of Environment | |
gro.date.issued | 2009 | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Agranovski, Igor E. | |